Signments



j U A STATES A PATENT TO EICE. I

LESTER EoLToN ALLEN, or EARMINGTON, N. H., ASSIGNOR, BY MESNE ASLSIGNMENTS, TO HIMSELF Ann ALONZO I. NUTE, OF SAME PLACE.

TOfbZZ' whom it concern MACHINERY F OR FlNl SHlNG BOOT-LEGS, are,

' SPECIFICATION forming part of Letters PatentNo. 284,265, datedSeptember 4, 1883.

' Application filed May 22 1883 (No model.) I

, Be it known that I, LESTER HOLTON ALLEN, of Farmington, in the countyof Strafiord, of the State of New Hampshire, have invented a new anduseful Improvement in Machinery for Finishing BootLeg or various otherSeams; and I do hereby declare the same to be described in the followingspecification andrepresented in the accompanying drawings, of

which Figure 1 is a top view, and Fig. 2 a sideelevation, of a machineembodying my, invention, the nature of which is defined in the claimhereinafter presented. Figs. 3.and4 are ver- .ticalsecti'ons of theboxes and the supports thereof of the upper worm-shaft, to behereinafterdescribed. Fig. 5 is an edge view of the two finishing-rollers.

In this machine the seam to be flattened and rubbed down or finished isto be run between two rollers, A and B, the upper of which isconcavean'd the lower convex across its pe-- riphery, as represented.The upper roller has a diameter about half that of the lower one, thelatter being pivoted within a stationary arm, 0, projecting, as shown,from a standard, D. Another such arm, E, also extends from the standard,and is arranged over the arm 0 in manner as represented. There is fixedon the pivotal shaft 3 of the roller B a worm'gear, a, that engages witha worm or screw, 12, fixed on a horizontal shaft, 0, arranged as shown,and supported in boxes 01 d, projecting from the standard D and arm'O.Agear, e, fixed on the shaft 0, engages with another gear, f, fixed ona'driving-shaft, g,

supported in boxes 71, h, projecting from the standard. A driving-wheel,'5, revolves freely on the said shaft, except when clutched thereto,such wheel and shaft being provided with a suitable clutch. The gear f,that engages with a pinion, is, carried by the upper worm-shaft,

1 Z, is provided at its outer end with a worm or screw, m, that engageswith a worm-gear, n, fixed on the shaft n of the upper roller, A. Thesaid shaftn is journaled in the shorter arm of a lever, F, whichnisfulcrumed to the arm E, and extends in front of and over such arm inmanner as represented. The longer arm; of the lever E rests ,on a spiralspring, G,

kind of a spring may be used in the place of the said spiral spring toforce the said longer arm upward, in order to press the upper roller, A,downward relatively to the roller B.

As a boot-leg seamto be flattened and rubbed down or finished will varymore or less in thickness, and as the seam of one boot-leg may also varyin thickness relatively to that of another to be finished by themachine, it will be seen that in passing between the rollers A and B theupper of such rollers will necessarily have a movement more or lessupward and downward. y

In order that the worm mmay maintain its due relations to the gear n,-ormove upward and downward therewith to keepproperly in engagement withit, there is combined with the worm-shaft and the arm E and the lever Fa peculiar mechanism, which may be thus described: A lever, H,fulcrumedto a standard, 0, extending upward from the arm E, and arrangedtherewith as shown, has its longer arm pivoted to that of the lever F.The shorter arm of such lever H is jointed to a slide, I,

bracket, 11, extending from the arm E. Within this slide I, and pivotedto it, is one of the boxes 'qr-of the shaft Z, the other of said boxesbeing suitably pivoted in abracket, s, extending from the standard D,the whole being so as to enable the worm of the shaft Z to move upwardand downward with the gear with which it engages." The roller A, inrising rela* tively to the roller 13, will move the lever F, so as tocause the longer arm there-of to descend and force downward that of thelever H, whereby the slide I will be pulled upward, so as to cause theworm-shaft and its worm to rise with the worm-gear of the roller A. Thesaid upper roller revolves faster than the lower roller, andconsequently when the boot-leg seam is between the two rollers such seamwill roller.

In practice the machine has been found to operate to excellentadvantage. machine is in use, the lever F is connected to a foot-treadleon the floor by means of a rod When the not only be flattened orcompressed by them,

but will be rubbed and finished by the upper 9 5 IOO 75 adapted to moveupward and downward in a l attached to the rear end of the lever F, suchbeing for the pur ose of raising the upper roll, A, by the 'foot athewill of the operator." This is to remove the work at any time withoutrunning it through the machine. When, in the place of the spiral springG, I use a bow or leaf spring 'to" force the longer armfof the leverFupward, I have a screw screwed down through the arm near the'free endof the spring, such screw being to bear against the spring to vary theupwardpressure of it, as occasion may require, such springbeing fastenedto the arm E;

In the seam-finishing machine as explained, I claim In combination withtwo rollers, A and B,

and their mechanism, as described, for revolvingthem at different ratesof speed, and with the pressure" spring and lever, of the upper of saidrollers, mechanism, substantially as set forth, for causing theactuating-worm of the upper roller to rise and fall in unison with thegear in engagement with r it, and fixed on the shaft of the saidr0ller,-sueh mechanism consisting of the lever H, the slide I, and thetwo pivoted boxes q r, all being arranged and adapted essentially inmanner and to operate as represented.

LESTER HOLTON ALLEN.

' -VVitn'esses:.

E. E. DIOKSON,

WILLIAM H. HAYES.

